LPX122M250H4P3

Part Overview

The LPX122M250H4P3 is a 1200 µF, 250 V aluminum electrolytic capacitor in a radial, can snap-in package manufactured by Cornell Dubilier Electronics (CDE). This component is rated for general-purpose applications with a nominal lifetime of 1000 hours at 85°C. The part is currently active and available in stock (770 units). Equivalent and substitute parts are necessary when the original specification requires extended operational lifetime, improved temperature performance, different physical dimensions, or enhanced ripple current handling characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	LPX122M250H4P3
Manufacturer	Cornell Dubilier Electronics (CDE)
Capacitance	1200 µF
Voltage - Rated	250 V
Tolerance	±20%
ESR (Equivalent Series Resistance) @ 120Hz	166 mOhm
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Package / Case	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Diameter	1.378" (35.00 mm)
Height - Seated (Max)	1.772" (45.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Equivalent and substitute parts for the LPX122M250H4P3 are qualified based on the following electrical and mechanical parameters:

Critical Substitution Criteria:

Capacitance: 1200 µF (exact match required)
Voltage Rating: 250 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Diameter: 1.378" (35.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Variable Parameters Allowing Substitution:

Lifetime @ Temperature: May extend beyond 1000 hours at 85°C
Operating Temperature Range: May extend upper limit beyond 85°C
ESR (Equivalent Series Resistance): May vary within compatible ranges
Ripple Current Ratings: May vary at different frequencies
Physical Height: May vary within packaging constraints
Manufacturer: Alternative qualified manufacturers permitted

The substitute parts listed below maintain all critical electrical and mechanical specifications while offering enhancements in operational lifetime, temperature performance, or ripple current capacity.

Parameter Comparison

Parameter	LPX122M250H4P3 (Main)	380LQ122M250A032	380LX122M250A042	LLS2E122MELC	LGU2E122MELC
Manufacturer	CDE	CDE	CDE	Nichicon	Nichicon
Series	LPX	380LQ	380LX	LLS	LGU
Capacitance	1200 µF	1200 µF	1200 µF	1200 µF	1200 µF
Voltage - Rated	250 V	250 V	250 V	250 V	250 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR (Equivalent Series Resistance) @ 120Hz	166 mOhm	166 mOhm	166 mOhm	—	—
Lifetime @ Temperature	1000 Hrs @ 85°C	2000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C
Ripple Current @ 120 Hz	3.8 A	3.53 A	3.53 A	3.84 A	2.6 A
Ripple Current @ High Frequency	4.18 A @ 50 kHz	4.94 A @ 20 kHz	4.94 A @ 20 kHz	5.76 A @ 50 kHz	3.9 A @ 50 kHz
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Diameter	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)
Height - Seated (Max)	1.772" (45.00 mm)	1.457" (37.00 mm)	1.654" (42.00 mm)	1.378" (35.00 mm)	1.772" (45.00 mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All qualified substitute parts maintain ROHS3 compliance and active product status. Selection between the main part and substitute parts depends on application-specific requirements:

LPX122M250H4P3 (Main Part): Suitable for general-purpose applications with standard operational lifetime requirements. Baseline option with 770 units in stock.

380LQ122M250A032 (CDE Upgrade): Extends operational lifetime to 2000 hours at 85°C while maintaining identical electrical and physical specifications. Recommended when extended component lifetime is required without operating temperature elevation. Compact height of 1.457" (37.00 mm) offers space optimization. 1864 units in stock.

380LX122M250A042 (CDE Upgrade): Provides 3000-hour lifetime at 85°C with maintained electrical performance. Height of 1.654" (42.00 mm) accommodates standard board layouts. 2437 units in stock.

LLS2E122MELC (Nichicon Direct Substitute): Delivers 3000-hour lifetime at 85°C with enhanced ripple current capacity at 50 kHz (5.76 A). Compact height of 1.378" (35.00 mm) enables space-constrained applications. Extensive inventory availability (273,782 units).

LGU2E122MELC (Nichicon Extended Temperature): Qualified for elevated operating temperatures up to 105°C with 3000-hour lifetime rating. Specifications identical to main part in physical dimensions and mounting. Suitable for high-temperature applications where operating range extension is required. 274,082 units in stock.

Frequently Asked Questions (FAQ)

Q: Can I substitute the LPX122M250H4P3 with any of the listed parts? A: Yes, all listed parts maintain the critical electrical specifications (1200 µF, 250 V, ±20% tolerance) and identical package geometry (Radial, Can - Snap-In, 0.394" lead spacing, 1.378" diameter). They are mechanically and electrically compatible for direct replacement in through-hole applications.

Q: What is the difference between the CDE upgrade parts (380LQ and 380LX) and the main part? A: The primary difference is operational lifetime. The 380LQ122M250A032 extends lifetime to 2000 hours at 85°C, while the 380LX122M250A042 provides 3000 hours at 85°C. Physical dimensions vary slightly: the 380LQ has the smallest height (1.457"), the 380LX is intermediate (1.654"), and both original and 380LQ/380LX operate identically at rated conditions.

Q: How do the Nichicon parts (LLS2E122MELC and LGU2E122MELC) compare to CDE parts? A: The LLS2E122MELC matches CDE performance with 3000-hour lifetime and superior ripple current capacity at 50 kHz (5.76 A). The LGU2E122MELC extends the maximum operating temperature to 105°C while maintaining 3000-hour lifetime, making it suitable for high-temperature environments.

Q: Does board layout height matter for my application? A: Yes. Height variations range from 1.378" (LLS2E122MELC) to 1.772" (LPX122M250H4P3 and LGU2E122MELC). Verify your PCB clearance specifications before selecting a substitute part, particularly in space-constrained applications.

Q: Are all parts RoHS3 compliant? A: Yes, all listed parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Q: Which part should I select if my circuit requires enhanced ripple current handling? A: The LLS2E122MELC offers the highest ripple current capacity at high frequencies (5.76 A @ 50 kHz), followed by the CDE 380LX and 380LQ variants (4.94 A @ 20 kHz). Verify your specific frequency requirement when selecting based on ripple current ratings.

Q: Can I use the extended-temperature LGU2E122MELC in standard applications? A: Yes, the LGU2E122MELC is fully functional in standard temperature applications. Its extended upper temperature limit (-40°C to 105°C) provides additional design margin without affecting performance at lower operating temperatures.

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